CN110249940A - A kind of double cropping of rice implantation methods using red duckweed and rice symbiosis section fertilizer emission reduction volume increase - Google Patents
A kind of double cropping of rice implantation methods using red duckweed and rice symbiosis section fertilizer emission reduction volume increase Download PDFInfo
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
- A01G22/20—Cereals
- A01G22/22—Rice
Abstract
The invention discloses a kind of double cropping of rice implantation methods using red duckweed and rice symbiosis section fertilizer emission reduction volume increase for belonging to agricultural plantation technology field, specifically a kind of red duckweed reduces nitrogen application and greenhouse gas emission with rice symbiosis, the method for improving double cropping of rice yield.This method is that red duckweed is introduced Rice Production, constructs " rice duckweed " symbiosis composite system, saves nitrogen, emission reduction, high yield to realize, promotes Soil Nutrients in Paddy Field circulation, improves cropping system, establish a kind of novel double cropping of rice cropping pattern.As the extension of the duckweed time limit is supported in rice field, " rice duckweed " symbiosis is more and more obvious the production-increasing function of double cropping of rice, " rice duckweed " complex ecosystem, which makees system compared with conventional Rice, has volume increase emission reduction effect, can solve the problems such as south China the paddyfield soil quality declines, utilization rate of fertilizer is relatively low.With promotional value.
Description
Technical field
The present invention relates to agricultural plantation technology fields, in particular to a kind of to be increased production using red duckweed and the fertilizer emission reduction of rice symbiosis section
Double cropping of rice implantation methods, specifically a kind of red duckweed and rice symbiosis reduce nitrogen application and greenhouse gas emission, improve
The method of double cropping of rice yield.
Background technique
China is eating rice production and consumption big country.Rice is not only related to complete as China's staple food crop, production
State's grain security also influences people's lives quality, has a very important significance to grain security and ecological safety.Double cropping of rice
Plantation is the main planting patterns of China's Rice Production, and cultivated area accounts for about the 56% of national Monitoring of Paddy Rice Plant Area.Increase in population
Length, environmental change, farm land quality decline etc. is under multiple pressures, how to construct safe, high-quality, high yield, low consumption, ecology production kind
Implant model is that the important topic to be solved currently is badly in need of in double rice cropping system.
Double cropping of rice has long plantation history in China, sees the record of the Classic of Mountains and Rivers in B.C. 3rd century earliest.It is double
Season rice be exactly planted in 1 year one season early rice plant again one season late rice.The middle ten days and the last ten days in May starts to insert kind of an early rice seedlings, when to the middle ten days and the last ten days in July
Early rice is gathered in, then followed by turning over paddy field, inserting kind of late rice rice shoot, to catch up with to insert before lunar calendar the beginning of autumn and kind finishes, is received when to November
Late rice is cut, catches up with and completes harvesting before drop frost.The single harvest rice starts to receive in annual the middle ten days and the last ten days in June to the beginning of July rice transplanting, the middle ten days and the last ten days in October
It cuts.The every per mu yield of the single harvest rice is higher than a season for double cropping of rice, but total amount is lower than double cropping of rice a lot of.The appearance of double cropping of rice is to abundant benefit
With natural resources and human resources, increase grain yield has served highly important.
Important component part of the rice field as Agro-ecological System, the variation with global warming gas concentration have closely
Connection.Rice field greenhouse gas emission is the hot spot of Ecological Environment of Paddy Field research field, CH4And N2O be organic carbon in soil and
Product of the active nitrogen Jing Guo a series of complex conversion process.Rice field CH4Discharge and N2O discharge has the relationship of mutual growth and decline, water
Being in charge of reason is to influence CH4And N2The key factor of O discharge, and under the conditions of different water managements, CH4And N2The growth and decline of O discharge
Relationship performance is particularly evident.Application chemical nitrogen fertilizer is to influence N2O and CH4The important measures of discharge.
Red duckweed (Azolla imbircata (Roxb.) Nakai), also known as " Azolla imbricata ", belong to Salviniales, Azolla imbricata section,
Azolla, it is a kind of ancient aquatic fern originating from (about 5800 Wan Nianqian) before the late Cretaceous period, has been evolved
U.S. degree is higher, therefore can multiply so far.There are syncyanosen bacterium in the phyllocyst of red duckweed, nitrogen fixing capacity is strong, is natural biological nitrogen
Fertile factory, the main green manure type of Rice Production, the cheap raw material of organic Production of Livestock and Poultry, Edible Fungi.
Therefore, red duckweed is introduced into Rice Production, constructs " rice duckweed " symbiosis composite system, save nitrogen, emission reduction, height for realizing
It produces, promotes Soil Nutrients in Paddy Field circulation, improve cropping system, it is significant to construct novel double cropping of rice cropping pattern.
Summary of the invention
The object of the present invention is to provide it is a kind of using red duckweed and the fertilizer emission reduction of rice symbiosis section volume increase double cropping of rice implantation methods,
It is characterized in that, this method is building " rice duckweed " symbiosis composite system, specifically comprise the following steps:
Step 1. rice cropping management
The selection of 1.1 seed rice, seed rice includes rice (Oryza sativa L.), upland rice and late rice, early rice in the double cropping of rice
The grand flat high-tech Nong Pingzhong industry Co., Ltd breeding in variety selection Hunan, high and stable yield early-paddy brown rice, " excellent 705 " T；Late rice product
Kind of selection Yueyang institute of agricultural sciences breeding, in ripe late rice variety, " Yue You 9113 "；The both of which belongs to rice；
1.2 rice cropping management
A, early rice cultivation management
(1) seed is screened before sowing seedling, not full, incomplete seed is rejected, then soaks seed；
(2) early rice seedling selection to seedling carries out smooth, exclusion excessive moisture, laying seedling before and after clear and bright solar term
Disk, after planting earthing, finally uses plastic film covering and heat insulating；During seedling, every morning, plastic film is raised, ventilation 2 is small
When；When rice shoot length to 10 ㎝ or so, water is covered；It, can transplanting seedlings to after planting 25 days or so；
(3) for paddy field 7-10 days before rice transplanting, progress is smooth, and applies base manure；Before rice transplanting 1-2 days spray insect-proof agents and
Antifreezing agent；Rice transplanting transplanting is carried out after May Day；
(4) herbicide spraying weed eradication after rice transplanting, 3 pesticides of growth period duration of rice internal spraying prevent disease and insect pest；
(5) paddy field moisture management is by the way of local waterflooding-dry field-alternation of wetting and drying, specially tillering stage, in boot stage
Deep water management, shallow water in maturity period pustulation period keep Dressing Moist Rice Field, harvest and previous week start to drain.
(6) mid-July early rice it is mature, select fine day after mature, according to field size select to carry out harvester harvesting or
It is manually harvested, when harvesting accomplishes that field is anhydrous, in order to avoid paddy impregnates in water, influences quality of rice；
(7) by crop straw burning returning to the field after early rice harvesting.
B. rice cultivation management
(1) late rice seedling selection is before Summer Solstice solar term, other same early rice of seedling measure；
(2) late rice is transplanted before and after Great Heat solar term, and applies base manure, the transplanting and management of late rice, with early rice field
Management is consistent；
(3) late rice should prevent and treat two generation snout moth's larvas, three generations snout moth's larva, banded sclerotial blight, rice blast；
(4) late rice maturation after late rice is mature in fine day harvest, harvesting, accomplishes that field is anhydrous before and after Frost's Descent solar term.With
Exempt from paddy immersion influences paddy quality in water.
(5) by crop straw burning returning to the field after late rice harvesting.
The red duckweed of step 2. is put in a suitable place to breed,
Red duckweed (Azolla imbircata (Roxb.) Nakai), also known as " Azolla imbricata ", belong to Salviniales, Azolla imbricata section,
Azolla；The red duckweed selection card state duckweed (Azolla caroliniana) of " rice duckweed " cogeneration system；After early rice, late rice transplanting
Put within 5-7 days red duckweed in a suitable place to breed, fresh duckweed stocking rate is 1 000 ㎏ hm-2；After rice transplanting, duckweed paddy field not herbicide spraying is supported.
The application base manure is nitrogenous fertilizer urea, 200 ㎏ hm-2N；Phosphate fertilizer calcium superphosphate, 85 ㎏ hm-2P2O5；Potash fertilizer potassium oxide,
100㎏hm-2K2O。
The herbicide sprayed is per acre with 10% pyrazosulfuron of the auspicious Bioisystech Co., Ltd's production of Hunan Cohan
Bispyribac-sodium, each 30ml are sprayed with spray apparatus in rice field with 20L water is dissolved in.
The spraying 3 times pesticides include:
2-3 days before transplanting, the 10g emamectin benzoate Hostathion produced per acre with Jiangxi Zhong He Chemical Co., Ltd. is dissolved in 20L
Water is sprayed on farmland, prevents and treats the primary pest of leaf pest, striped rice borer；
Rice young panicle breaks up latter stage to the cut phase, is taken with 12g oppose steady alias Bayer and 10g sulfoxaflor alias pottery per acre
The medicament of family name's benefit agriculture is dissolved in 20L water and is sprayed on farmland, prevention and control rice blast, false smut and banded sclerotial blight, moreover it is possible to effectively prevent pest and disease damage:
Planthopper, rice leaf roller, borer；
Rice earing stage, per acre with the pymetrozine 5g and the limited public affairs of Jiangxi crowd's combination work of Jiangsu Anpon Electrochemical Co., Ltd.'s production
The emamectin benzoate tebufenozide 10g of department's production is dissolved in 20L water and is sprayed on farmland, prevents and treats planthopper and rice leaf roller.
The beneficial effects of the invention are as follows red duckweed is introduced Rice Production, " rice duckweed " symbiosis composite system is constructed, to realize reality
Nitrogen, emission reduction, high yield are now saved, promotes Soil Nutrients in Paddy Field circulation, improves cropping system, construct the mesh of novel double cropping of rice cropping pattern
Mark.As the extension of the duckweed time limit is supported in rice field, " rice duckweed " symbiosis is more and more obvious the production-increasing function of double cropping of rice, " rice duckweed " compound life
State system, which makees system compared with conventional Rice, has volume increase emission reduction effect, has promotional value.
Detailed description of the invention
Fig. 1 conventional Rice makees system field schematic diagram.
Fig. 2 is " rice duckweed " symbiosis complex ecosystem field schematic diagram, and the small particles in figure on the water surface is red duckweed.
Specific embodiment
The present invention proposes a kind of double cropping of rice implantation methods using red duckweed and rice symbiosis section fertilizer emission reduction volume increase, and this method is
Red duckweed is introduced into Rice Production, constructs " rice duckweed " symbiosis composite system, nitrogen, emission reduction, high yield is saved to realize, promotes paddy soils
Earth Nutrient Cycling improves cropping system, establishes a kind of novel double cropping of rice cropping pattern.Embodiment is to this hair after with reference to the accompanying drawing
It is bright to be further described.
Rice (Oryza sativa L.) is grass family, and draft oryza plant, annual, unifacial leaf, property happiness is warm and humid, is
As main most long one kind of grain in Oryza, it is different from upland rice.Sown area of the rice in China accounts for national grain
The 1/4 of crop, and yield then accounts for more than half；Early-paddy brown rice of the invention selects the grand flat high-tech Nong Pingzhong industry Co., Ltd in Hunan
Breeding, high and stable yield early-paddy brown rice, " excellent 705 " T；Varieties In Late Rice selects Yueyang institute of agricultural sciences breeding, in ripe late long-grained nonglutinous rice product
Kind, " Yue You 9113 "；Seed is screened before sowing seedling, not full, incomplete seed is rejected, then soaks seed；Seedling, shifting
It plants, put red duckweed, field management, by crop straw burning returning to the field after harvesting in a suitable place to breed；It is as shown in Figure 1 and Figure 2 that situation is embodied.Below with reality
Example is applied to be further described.
Embodiment
2014-2015 is in the Hunan Yueyang Huarong County town the Wan Yu village Wu Jiaqiao (29 ° of 24 ' N, 112 ° of 30 ' E, height above sea level
35m) carry out test, is typical double cropping of rice growing area experimental field not with Dongting Lake lake region Plain.
Test is single factor experiment, processing are as follows: (RAN0) is not applied fertilizer in " rice duckweed " symbiosis；Conventional Rice does not apply fertilizer (RMR0)；
" rice duckweed " symbiosis, which halves, applies 100 ㎏ hm of nitrogen-2N(RAN1)；Conventional Rice work, which halves, applies 100 ㎏ hm of nitrogen-2N(RMN1)；" rice duckweed " is total
Raw habit applies 200 ㎏ hm of nitrogen-2N(RAN2)；Conventional Rice makees habit and applies 200 ㎏ hm of nitrogen-2N (RMN2), random alignment, each processing
In triplicate.High ridge is made in plot area 5m × 6m=30 ㎡, minizone, and the high 0.5m of ridge protects line width 1m, minizone field
It is wrapped up with plastic film on the ridge.Early rice experimental cultivar is T excellent 705, and late rice experimental cultivar is high mountain 9113.
Testing nitrogenous fertilizer used is urea (N content, 46%), and phosphate fertilizer is calcium superphosphate (P2O5Content, 12%), potash fertilizer is chlorine
Change potassium (K2O content, 60%), early rice, late rice dose are consistent.Phosphate fertilizer, potash fertilizer are applied on the day before every season early rice and late rice rice transplanting
Enter, usage amount is respectively 85 ㎏ hm-2P2O5, 100 ㎏ hm-2K2O。
Test is card state duckweed (Azolla caroliniana) with red duckweed.It is put in a suitable place to breed within 5-7 days after early rice, late rice transplanting red
Duckweed, fresh duckweed stocking rate are 1 000 ㎏ hm-2Fresh weight after rice transplanting, supports duckweed cell in addition to not herbicide spraying, field desinsection
Agent and bactericidal agent, pour water, the field management measures such as mid-term dry field are carried out according to locality habit.
It is turned over before early rice, late rice rice transplanting and site preparation.Water consumpation management system and local paddy field moisture management system
Unanimously, i.e., shallow water early period promotees tiller, and mid-term drains dry field, dry field to Tanaka's breach, the grouting of later period shallow water, row of or so mature the last week
Water harvesting.By crop straw burning returning to the field after early rice, late rice harvest.
In test in 2013-2014 continuous 2 years, in double cropping of rice growth period, using static chamber-gas general both at home and abroad
Phase chromatography acquisition, analysis CH4And N2O gas concentration.Static chamber is made of 6mm thickness transparent organic glass PVC board, and specification is
45㎝×45㎝×100㎝.Sponge and masking foil are surrounded by outside static chamber, to prevent from shining upon temperature change in caused case
It is excessive.There are an apertures at the top of sampling box, fill in rubber stopper, thermometer are inserted into, for observing temperature change in static chamber, with gas
Sample acquisition time is consistent, temperature in observational record sampling box.After morning, late rice transplanting, side row is avoided, is installed in each cell static
Bottom seat, pedestal bury 5 ㎝, and pedestal includes consistent 4 root and stem of certain plants of rice plant of growing way.Every time before sampling, water is added in slot, will be sampled
Case covers on the sampling system that may make up a sealing in the pedestal water-filling slot.
Start within the 3rd day acquisition gas after morning, late rice transplanting, was acquired 1 time every 3-7 days later.During dry field, increase
Sample frequency, 3 days before rice harves.Rainy days does not sample.According to the repetition setting of experimental plot processing, using patting everywhere
Row sampling, respectively handles 4 repetitions.Each sampling time is morning 09:00-11:00, and when sampling exists sampling box arranged orthogonal
In base groove and with water-stop, gas and atmosphere are without gas exchanges in guard box.Upper top is equipped with one in static chamber
Top fan is opened before sampling every time, is mixed evenly gas in case by the small fan of 12 overhead accumulators control.In the wink of cover case
Between (be denoted as 0min), 10,20 and 30min after cover case acquisition gas sample is extracted from case with manual time-keeping with 50ml syringe
Gas is transferred to 0.5L gas sampling bag by swivel tee valve, and sampling quantity 50ml is standby to survey.Using modified by the U.S.
The Agilent 7890A gas-chromatography and autosampler of production measure the CH of same gas sample4、CO2And N2O concentration.Detect CH4
And CO2The detector of concentration is flame ionic detector (Flame Ionization Detector, FID), detects N2O concentration
Detector is electron capture detector (Electron Capture Detector, ECD), the temperature point of FID and ECD detector
It Wei not be 200 DEG C and 330 DEG C.Chromatography is 1/8 inch P.Q (8000 mesh) packed column, 55 DEG C of column temperature when separation.Carrier gas is High Purity Nitrogen
And High Purity Hydrogen.Calibrating gas is provided by State center for standard matter.
Rice yield, the CH of different disposal are measured respectively4Accumulative discharge amount, N2O adds up discharge amount and time ruler between 100 years
Global warming potential (GWP) in spending.
Rice yield is as shown in following table table 1.
Influence of 1 different disposal of table to double cropping of rice rice yield
Note: RA indicates " rice duckweed " symbiosis, and RM indicates that conventional Rice is made, and N0, N1 and N2 indicate amount of application of nitrogen fertilizer 0,100 and 200
㎏hm-2N.Difference reaches the level of signifiance (P < 0.05) between same column difference lowercase indicates same period different disposal.
The result shows that the anniversary double cropping of rice rice yield of " rice duckweed " symbiosis processing is more normal than the same period under the conditions of not applying nitrogen
Rule rice, which deals with, embodies volume increase；Do not apply nitrogen and halve apply nitrogen under the conditions of, as the extension of the duckweed time limit is supported in rice field, " rice duckweed " altogether
Life is more and more obvious the production-increasing function of double cropping of rice；And under the conditions of habit applies nitrogen, " rice duckweed " symbiosis makees volume increase width compared with conventional Rice
It spends lower.
CH4 adds up discharge amount as shown in following table table 2:
Season CH4 of 2 different disposal of table accumulates tired discharge amount
Note: RA indicates " rice duckweed " symbiosis, and RM indicates that conventional Rice is made, and N0, N1 and N2 indicate amount of application of nitrogen fertilizer 0,100 and 200
㎏hm-2N.Difference reaches the level of signifiance (P < 0.05) between same column difference lowercase indicates same period different disposal.
N2O adds up discharge amount as shown in following table table 2:
The season N of 3 different disposal of table2O accumulates tired discharge amount
Note: RA indicates " rice duckweed " symbiosis, and RM indicates that conventional Rice is made, and N0, N1 and N2 indicate amount of application of nitrogen fertilizer 0,100 and 200
㎏hm-2N.Difference reaches the level of signifiance (P < 0.05) between same column difference lowercase indicates same period different disposal.
Between 100 years of different disposal in time scale global warming potential (GWP) as shown in following table table 4:
Global warming potential (GWP) in time scale between 100 years of 4 different disposal of table
Note: RA indicates " rice duckweed " symbiosis, and RM indicates that conventional Rice is made, and N0, N1 and N2 indicate amount of application of nitrogen fertilizer 0,100 and 200
㎏hm-2N.Difference reaches the level of signifiance (P < 0.05) between same column difference lowercase indicates same period different disposal.
The above result shows that " rice duckweed " symbiosis substantially reduces morning, late rice and double cropping of rice rice field CH compared with conventional Rice is made4
Discharge.In the case where different nitrogen applications are horizontal, " rice duckweed " symbiosis substantially reduces early rice, late rice and double cropping of rice rice field compared with conventional Rice
CH4Discharge amount；In the case where two kinds of planting patterns are made in " rice duckweed " symbiosis and conventional Rice, with the increase CH of amount of application of nitrogen fertilizer4Discharge amount subtracts
It is few.
Compared with conventional Rice is made, " rice duckweed " symbiosis dramatically increases morning, late rice rice field N2O discharge.In different nitrogen application water
Under flat, " rice duckweed " symbiosis dramatically increases early rice, late rice and double cropping of rice rice field N compared with conventional Rice2O discharge amount；In " rice duckweed " symbiosis
Make under two kinds of planting patterns with conventional Rice, with the increase N of amount of application of nitrogen fertilizer2O discharge amount increases.
In the case where two kinds of planting patterns are made in " rice duckweed " symbiosis and conventional Rice, GWP is reduced with the increase of amount of application of nitrogen fertilizer.?
Under different nitrogen amount applieds, compared with conventional Rice is made, " rice duckweed " symbiosis significantly reduces GWP.In conclusion " rice duckweed " complex ecological system
System, which makees system compared with conventional Rice, has volume increase emission reduction effect, has promotional value.As the extension of the duckweed time limit is supported in rice field, " rice duckweed " is total
Life is more and more obvious the production-increasing function of double cropping of rice.
Claims (4)
1. a kind of double cropping of rice implantation methods using red duckweed and rice symbiosis section fertilizer emission reduction volume increase, which is characterized in that this method is
" rice duckweed " symbiosis composite system is constructed, is specifically comprised the following steps:
Step 1. rice cropping management
1.1RiceKind selection,RiceKind includes waterRice(Oryza sativa L.)、Upland riceAnd late rice, early-paddy brown rice in the double cropping of rice
Select the grand flat high-tech Nong Pingzhong industry Co., Ltd breeding in Hunan, high and stable yield early-paddy brown rice, " excellent 705 " T；Varieties In Late Rice selection
The breeding of the Yueyang institute of agricultural sciences, in ripe late rice variety, " Yue You 9113 "；The both of which belongs to rice；
1.2 rice cropping management
A, early rice cultivation management
(1) seed is screened before sowing seedling, not full, incomplete seed is rejected, then soaks seed；
(2) early rice seedling selection to seedling carries out smooth, exclusion excessive moisture before and after clear and bright solar term, and laying seedling-cultivation plate is broadcast
Earthing after kind finally uses plastic film covering and heat insulating；During seedling, every morning raises plastic film, divulges information 2 hours；To seedling
When 10 ㎝ of Miao Changzhi, water is covered；It, can transplanting seedlings to after planting 23-27 days；
(3) for paddy field 7-10 days before rice transplanting, progress is smooth, and applies base manure；The 1-2 days spray insect-proof agents and antifreeze before rice transplanting
Agent；Rice transplanting transplanting is carried out after May Day；
(4) herbicide spraying weed eradication after rice transplanting, 3 pesticides of growth period duration of rice internal spraying prevent disease and insect pest；
(5) paddy field moisture management is by the way of local waterflooding-dry field-alternation of wetting and drying, specially tillering stage, deep water in boot stage
Management, shallow water in maturity period pustulation period keep Dressing Moist Rice Field, harvest and previous week start to drain；
(6) in early rice maturation mid-July, fine day is selected after mature, according to field size selection progress harvester harvesting or manually
It is harvested, when harvesting accomplishes that field is anhydrous, in order to avoid paddy impregnates in water, influences quality of rice；
(7) by crop straw burning returning to the field after early rice harvesting；
B. rice cultivation management
(1) late rice seedling selection is before Summer Solstice solar term, other same early rice of seedling measure；
(2) late rice is transplanted before and after Great Heat solar term, and applies base manure, the transplanting and management of late rice, with early rice field management
Unanimously；
(3) late rice should prevent and treat two generation snout moth's larvas, three generations snout moth's larva, banded sclerotial blight, rice blast；
(4) late rice maturation after late rice is mature in fine day harvest, harvesting, accomplishes that field is anhydrous before and after Frost's Descent solar term, in order to avoid rice
Paddy is impregnated influences paddy quality in water；
(5) by crop straw burning returning to the field after late rice harvesting,
The red duckweed of step 2. is put in a suitable place to breed,
Red duckweed (Azolla imbircata (Roxb.) Nakai) also known as " Azolla imbricata " belongs to Salviniales, Azolla imbricata section, Man Jiang
Red category；The red duckweed selection card state duckweed (Azolla caroliniana) of " rice duckweed " cogeneration system；The 5-7 after early rice, late rice transplanting
It puts red duckweed in a suitable place to breed, and fresh duckweed stocking rate is 1 000 ㎏ hm-2；After rice transplanting, duckweed paddy field not herbicide spraying is supported.
2. according to claim 1 using the double cropping of rice implantation methods of red duckweed and rice symbiosis section fertilizer emission reduction volume increase, feature
It is, the application base manure is nitrogenous fertilizer urea, 200 ㎏ hm-2N；Phosphate fertilizer calcium superphosphate, 85 ㎏ hm-2P2O5；Potash fertilizer potassium oxide, 100
㎏hm-2K2O。
3. according to claim 1 using the double cropping of rice implantation methods of red duckweed and rice symbiosis section fertilizer emission reduction volume increase, feature
It is, the herbicide sprayed is per acre with the double grass of 10% pyrazosulfuron of the auspicious Bioisystech Co., Ltd's production of Hunan Cohan
Ether, each 30ml are sprayed with spray apparatus in rice field with 20L water is dissolved in.
4. according to claim 1 using the double cropping of rice implantation methods of red duckweed and rice symbiosis section fertilizer emission reduction volume increase, feature
It is, spraying 3 pesticides include:
2-3 days before transplanting, the 10g emamectin benzoate Hostathion produced per acre with Jiangxi Zhong He Chemical Co., Ltd. is dissolved in the spray of 20L water
Farmland is imposed on, the primary pest of leaf pest, striped rice borer is prevented and treated；
Rice young panicle breaks up latter stage to the cut phase, is taken with 12g oppose steady alias Bayer and 10g sulfoxaflor alias Tao Shi benefit per acre
The medicament of agriculture is dissolved in 20L water and is sprayed on farmland, prevention and control rice blast, false smut and banded sclerotial blight, moreover it is possible to effectively prevent pest and disease damage: rice flies
Lice, rice leaf roller, borer；
Rice earing stage, it is raw with the pymetrozine 5g and Jiangxi Zhong He Chemical Co., Ltd. of Jiangsu Anpon Electrochemical Co., Ltd.'s production per acre
The emamectin benzoate tebufenozide 10g of production is dissolved in 20L water and is sprayed on farmland, prevents and treats planthopper and rice leaf roller.
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| CN104145618A (en) * | 2014-07-28 | 2014-11-19 | 中国农业大学 | Method for increasing yield of double cropping rice by turnover and fertilizer saving of Astragalus sinicus L. and straw in rice field |
| CN107197726A (en) * | 2017-05-12 | 2017-09-26 | 蒙运绍 | A kind of implantation methods of paddy rice |
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| 许和水: ""双季稻区"稻萍"共生系统固碳减排效应研究"", 《中国博士学位论文全文数据库 农业科技辑》 * |
Cited By (1)
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| CN114711110A (en) * | 2022-04-14 | 2022-07-08 | 扬州大学 | Method for controlling pH value of rice field by utilizing duckweed and improving utilization rate of nitrogen fertilizer in rice field |
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