CN102612937B - Method for controlling Angelica sinensis root-knot nematode by marigold interplanting - Google Patents
Method for controlling Angelica sinensis root-knot nematode by marigold interplanting Download PDFInfo
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Abstract
A method for controlling Angelica sinensis root-knot nematode by marigold interplanting belongs to the field of controlling damage by plant parasitic nematodes, and particularly relates to a method for controlling Angelica sinensis root-knot nematode by changing the Angelica sinensis cropping system. The method includes the steps: transplanting marigold to two sides of each ridge (having a bed width of 1.7m) with a plant spacing of 30cm twenty days before Angelica sinensis transplanting; and when 20 days are past, transplanting four plants of Angelica sinensis per row of marigold with a plant spacing of 28cm, and allowing each row of Angelica sinensis to be spaced from marigold by 35cm so as to form 2:4 interplanting of marigold and Angelica sinensis (see attached figures). Compared with single culture of Angelica sinensis, the method can be more effective in root-knot nematode control by more than 75% and also has a composite field increasing effect for both Angelica sinensis and marigold, and land utilization rate is increased by 70%.
Description
One, technical field
The present invention relates to plant nematode disease control field, more specifically, the present invention relates to a kind of method that plant root-knot nematode is controlled in change by cropping system.
Two, background technology
When being classified as the perennial high mountain herbaceous plant of Carrot family medicine, be the large parts of generic medicinal plants of China, be not only directly used in a large number traditional Chinese medicine formula, and be important source material and the traditional export commodity of many Chinese patent drugs.Radix Angelicae Sinensis main product, in China's the southeast of Gansu mountain area, be take Minxian County as main, is secondly mountain area and the hilly country that economize in Yunnan, Sichuan, Shaanxi, Hubei etc., be annual or biennial cultivation medicinal plant, in Yunnan, be domesticated for annual, 40～70 centimetres of strain Radix Angelicae Sinensis plant heights, happiness shade environment.
Root-knot nematode is the plant nematode that a class causes various plants root knot nematode disease, parasitize crop root, belong to Nemathelminthes, not only can directly to host plant, damage, also can propagate plurality of plant diseases, its host plant is over 3000 kinds, belong to 114 sections, comprise paddy rice, peanut, tobacco, tealeaves, fruit tree, vegetables, flowers, medicinal material etc., wherein particularly serious with hazard of plant such as Solanaceae, Curcurbitaceae, Cruciferae, so root-knot nematode belongs to one of phytopathy original of serious harm world agriculture production.At south China, Meloidogyne mainly comprises javanese root knot nematode, peanut root-knot nematode, northern root-knot nematode and Meloidogyne incognita.Yao Ruyu etc. (2010) report causes that the cause of disease of angelica root Root-knot is Meloidogyne incognita, Radix Angelicae Sinensis is Meloidogyne incognita New Host Records, and the visible leaf of its symptom is yellow, and blade tip is shrivelled, root length has the root-knot nematode hazard symptoms such as root knot, has a strong impact on output and the quality of Radix Angelicae Sinensis.
In production practices, control root-knot nematode is mainly taked cultural control method (as rice field-upland field rotation, with gramineous crop crop rotation etc.) and chemical pesticide control method.Cultural control method, owing to being subject to objective environment condition (water scarcity) or cropping system restriction, is difficult to apply in mountain area; For chemical pesticide control, because the good agricultural chemicals of preventive effect is as the drawback of Furadan, Aldicarb, gram line pellet, go out high, the high residual hazards of nematode killing agent cost accounting such as line prestige, high residue, country has prohibited and on grain, vegetables and Chinese herbal medicine crop, has used or restriction is used.Therefore, explore root knot nematode control method effective, standard and become the important problem of researcher, producer's common concern.
Aztec marigold is composite family Tagetes herbaceous plant, originates in Mexico, due to wide adaptability, resistance to low level management, now all over the world, introduces a fine variety, and be widely used in garden and view and admire with flowers, and flower, leaf can be used as medicine.Xanthophyll is in marigold flower, to have Important Economic to be worth and bioactive extract, and it is a kind of antioxidant of excellent performance, is widely used in recent years food industry and the chemical industry fields such as food, feed, medicine.Due to the thriving demand of domestic and international market to xanthophyll, xanthophyll price climbs up and up, and 1 gram of xanthophyll price is suitable with 1 gram of price of gold, have the title of " soft gold ".Therefore, as a kind of new economic crops, domesticly from the mid-90 in 20th century, start to introduce and plant chromophyll with Aztec marigold, because market prospects are wide, Aztec marigold obtains unprecedented development in China.Nowadays, in the Inner Mongol, the ground year plantation Aztec marigold such as Jilin, Heilungkiang, Shandong, Shaanxi, Shanxi, Liaoning, Xinjiang, Hubei, Sichuan, Yunnan is over 20,000 hectares.1.3～1.5 meters of the general plant heights of Aztec marigold, like moistening, sunny environment.
It is reported, various bioactivators in Aztec marigold root system (polysaccharide, thiophene phenol, essential oil etc.) has stronger killing action to multiple nematode, comprises Meloidogyne incognita, peanut root-knot nematode, javanese root knot nematode, Cobb root and species of Tylenchorhynchus Nematodes etc.
Utilize the crop principle that counteracts each other, adopting intercropping and interplanting mode to control multiple damage by disease and insect, minimizing fertilizer and pesticide amount of application, improving the compound output of crop is one of important application technology during traditional farming is produced.Its theoretical foundation is that different crops exists plant height, moisture and nutrien utilization, light-use, pest species difference, reaches the complementary and synergy of intercropping and interplanting crop on biological property.That is to say, two kinds of crops of intercropping and interplanting should not exist competitive relation or competitive effect to be greater than complementary effect.Carry out intercropping and interplanting and may occur that some are difficult to expected result, be mainly the root system of the wherein Plants in intercropping and interplanting in growth and development process towards periphery soil environment discharge some activated allelochemicals, the normal growth that may affect another kind of plant, vice versa.This mutual inhibition or competitive effect can show by the impact on output, be the compound output of intercropping and interplanting higher than yield per unit area under monoculture condition be provable the two do not exist competitive effect or effect less, intercropping and interplanting should be carried out, otherwise intercropping and interplanting should not be carried out.
Because Aztec marigold is no matter in southern china or all generally plantations of the north, wide adaptability, be easy to management, the Aztec marigold of therefore usining reaches and controls nematode and cause harm and may have certain feasibility as intercropping and interplanting crop, is also worth carrying out some and gropes.
Abroad, utilize Aztec marigold and other economic crops or cereal crops crop rotation or intercropping to control the case that various crop nematodosis has had successful Application, but the report of controlling disease about Aztec marigold intercropping/crop rotation mainly concentrates on traditional field crop and ornamental flower, as corn, tobacco, tomato, gladiolus etc., the application on traditional Chinese medicine have not been reported.
At home, pigment carries out establishing in large scale with Aztec marigold as a kind of specialty economies crop and starts from the nineties in 20th century.Because planting time is short, domestic scholars is few to this crop investigations, especially aspect the theory and practice of Aztec marigold and other traditional Intercroppings, explores limited.Up to now, the domestic exploration that only has only a few farming and cultivation expert to carry out the Intercropping Cultivation pattern of Aztec marigold and wheat and vegetables, and mainly concentrate on by intercropping and interplanting and improve the compound output of crop, land utilization rate or economic well-being of workers and staff, have no the formal report that utilizes Aztec marigold intercropping and interplanting disease and pest control.And for domestic Pesticide Science expert, their research interest is separation, evaluation, the determination of activity aspect of Aztec marigold bioactivator, its final goal is attempt manually to synthesize the natural peculiar desinsection of Aztec marigold, bactericidal activity chemical substance and carry out production application, but the research and development cycle is long, reach this target difficult.Therefore, utilize Aztec marigold diversity growing to control root knot nematode disease and there is easy, economic, effective feature.But its difficult point is, the one, Aztec marigold is as a kind of economic crops of new introduction, and researcher pays close attention to seldom, and researcher need to possess the knowledge and theory background of crop cultivation, farming, plant pathology and Pesticide Science; Secondly, Radix Angelicae Sinensis is compared with large crops, and its plantation is only confined to mountain area or the hilly country of some areas, and cultivated area is also limited, and the scholar or the expert that cause studying Radix Angelicae Sinensis damage by disease and insect are less.Therefore, the formal report of relevant Radix Angelicae Sinensis disease cause of disease kind, regularty of epidemic, disease control is very few, especially utilizes Radix Angelicae Sinensis and other crops intercropping and interplantings to carry out the practice of Pest management and reports deficient especially.
The method of preventing and treating of relevant root-knot nematode, according to preventing and treating principle difference, existing bibliographical information or patent are open.
Within 2003, king is apt to refined a kind of method and apparatus of killing root-knot nematode that discloses, and its principle is to adopt physics (method) high temperature to kill nematode, and method comprises beats vertical core, cross-drilled hole, logical vapours etc., and equipment comprises puncher and steam Operation Van.
Cao Zhi equality (2006) discloses a kind of method of preventing and treating tomato root-knot eelworm, utilizes resistance stock grafting to obtain tomato of preventing root-knot Nematode disease grafting, is characterized in utilizing the anti-nematode attribute of stock to prevent and treat tomato root-knot eelworm.Its step is the processing of tomato resistance stock, susceptible tomato seedling, grafting, the anti-root-knot nematode grafting of acquisition.
Sun Zhiqiang (2008) has applied for patent of invention " novel biological preparation for killing root-knot nematode and application method thereof ", this patent of invention is to make wetting powder after utilizing tuber of stemona powder, zanthoxylum powder, tobacco leaf powder, Soybean Hull powder, activating agent etc. to mix in proportion, and while using, thin up is filled with root or spreads fertilizer over the fields.
Sun Shiwei (2008) has reported the method for the multiple control such as physical control, cultural control, biological control, chemical control root-knot nematode.
A common trait of above document and patent is that the producer needs to be grasped certain plant pathology professional knowledge and maybe needs to be equipped with professional equipment, in all reports or publication material, does not relate to the method for Radix Angelicae Sinensis and other crops intercropping and interplantings is controlled to Radix Angelicae Sinensis root-knot nematode.
Three, summary of the invention
The present invention relates to change Aztec marigold and Radix Angelicae Sinensis cultivation mode, being about to Aztec marigold introduces in traditional monoculture pattern of Radix Angelicae Sinensis, make full use of Aztec marigold cultivation adaptability wide, there is good eelworm-killing activity and Radix Angelicae Sinensis happiness is shady, Aztec marigold is liked positive biological property, by companion planting, cultivate and reaches the object of controlling root-knot nematode, increasing the compound output of crop and raising land utilization rate.
Particularly, the present invention relates to adopt crops intercropping and interplanting technology to control the method for Radix Angelicae Sinensis root-knot nematode.By changing the monoculture method of Radix Angelicae Sinensis and Aztec marigold, Aztec marigold is introduced to Radix Angelicae Sinensis cultivation mode, specifically before transplanting Radix Angelicae Sinensis 20 days, first transplant Aztec marigold, widen Aztec marigold line-spacing, Aztec marigold, plant Radix Angelicae Sinensis in the ranks.Concrete grammar is as follows:
(1) carry out according to a conventional method respectively Radix Angelicae Sinensis, Aztec marigold is grown seedlings, and (Radix Angelicae Sinensis is grown seedlings and is undertaken by < < Radix Angelicae Sinensis high-yield high-efficiency cultivation technology > >.Li Shaofeng, Crop Diseases in Yunnan, 2005,4:10; Aztec marigold seedling-cultivating method adopts < < marigold with pigment culture technique > >
http://www.zynw.com/lanmu2.php？lmid＝10&wzid＝6228)；
(2) Aztec marigold two ridges cultivation, 30 centimetres of spacing in the rows, 1.6 meters of line-spacings, planting density 2400-2500 plant/acre;
(3) in Aztec marigold, plant and within latter 20 days, transplant when being attributed to Aztec marigold ridge face in the ranks, 28 centimetres of spacing in the rows, 30 centimetres of line-spacings, the limit trade is returned and 35 centimetres, Aztec marigold interval;
(4) Radix Angelicae Sinensis, Aztec marigold daily management, fertilising carry out that (Radix Angelicae Sinensis is grown seedlings and undertaken by < < Radix Angelicae Sinensis high-yield high-efficiency cultivation technology > > routinely; Is Aztec marigold grown seedlings and is undertaken by < < marigold with pigment culture technique > >: http://www.zynw.com/lanmu2.php? lmid=10 & wzid=6228).
Four, accompanying drawing explanation
(1) Fig. 1 is the cultivation specification figure of Radix Angelicae Sinensis nonoculture
Radix Angelicae Sinensis nonoculture is in the present invention the contrast as Radix Angelicae Sinensis intercropping and interplanting, and seeding row spacing is respectively 28 centimetres and 30 centimetres.
(2) Fig. 2 is the cultivation specification figure of Aztec marigold nonoculture
Aztec marigold nonoculture is in the present invention the contrast as Aztec marigold intercropping and interplanting, and seeding row spacing is respectively 30 centimetres and 1.3 meters.
(3) Fig. 3 be Aztec marigold/Radix Angelicae Sinensis 2: 4 () interplanting cultivation specification figure
In the present invention Aztec marigold/Radix Angelicae Sinensis 2: 4 () interplanting is respectively Radix Angelicae Sinensis, the Aztec marigold cultivation specification in embodiment one and embodiment two, between 2 row Aztec marigolds, planting 4 trades returns, Aztec marigold seeding row spacing is respectively 30 centimetres, 1.6 meters, Radix Angelicae Sinensis seeding row spacing is respectively 28 centimetres, 30 centimetres, and the limit trade is returned and 35 centimetres, Aztec marigold interval;
(4) Fig. 4 is community, embodiment field schematic diagram
Adopted altogether in the present invention 2 kinds of embodiments, i.e. Aztec marigold/Radix Angelicae Sinensis intercropping in 2: 4 and interplanting, arrange respectively Radix Angelicae Sinensis and Aztec marigold single in contrast, and Fig. 4 is embodiment one and embodiment two community, field schematic diagrames.Each community length is 24 meters, and wherein Radix Angelicae Sinensis nonoculture community is wide 1.2 meters, and Aztec marigold nonoculture community is wide 1.6 meters, and Aztec marigold/Radix Angelicae Sinensis community is wide 1.8 meters.
Invention effect (advantage):
The present invention finds through experimental study, Radix Angelicae Sinensis and Aztec marigold complementarity on biological property is stronger, can make full use of that Radix Angelicae Sinensis happiness is shady, Aztec marigold is liked positive feature and carries out height collocation, the higher Aztec marigold (average plant height 1.1-1.2 rice) of plant can be the hidden environment that Radix Angelicae Sinensis (average 0.6-0.8 rice) is created suitable growth.Particularly, the traditional cultivation that the present invention has changed Radix Angelicae Sinensis by Radix Angelicae Sinensis and Aztec marigold interplanting mode is accustomed to, and has the following advantages:
1, the root-knot nematode of effectively controlling Radix Angelicae Sinensis is caused harm, and residual, the residual hazard problem that do not have conventional pesticide control to bring;
2, compare with traditional nonoculture mode, improve unit are Radix Angelicae Sinensis or Aztec marigold output, increase compound output and income, improve land utilization rate;
3, easy, easily capable, labourer easily grasps.
Five, embodiment one
(1) Radix Angelicae Sinensis is grown seedlings and is managed
1, choose that the soil is porous, fertile, soil structure good, water source is plot easily, and by long 8 meters of moisture in the soil, moisture in the soil is wide 1.2 meters, and 30 centimetres of specifications of ditch depth are carried out whole ground, reason moisture in the soil;
2, select maturity high, the seed that degree of purity, germination rate, the first year that germination vigor is good produce, 2-3 days before sowing, 1-2 days basks seeds;
3, suitably rub kind after basking seeds, remove flank, with 30 ℃ of left and right warm waters seed soaking, seed soaking time 36-48 hour;
4, pull seed out, keep seed moist, under 25 ℃ of left and right conditions, vernalization 4-5 days, i.e. sowing after seed shows money or valuables one carries unintentionally;
5, broadcast front water and water enough moisture face, by the amount of 500-800 gram, seed is evenly spread on to moisture in the soil face, after covering 0.3-0.5 centimetre of fine earth, cover the coverings such as pine hair or clean straw, irrigate again water one time, on moisture in the soil face, take high 35-50 centimetre of film shed, on film, cover pine hair or straw, in order to insulation, water conservation and anti-direct sunlight;
6, reduce gradually covering after emerging, during to seedling 3 leaf 1 heart, all remove moisture in the soil face covering;
7, in time prevention and elimination of disease and pests, weeding and watering, reduces covering on shed gradually, to heeling in first 1 week, all removes (approximately 70 days);
8, Nutrition Soil is prepared by farmyard manure, the slow fire soil fired and is added approximately 0.5% composite fertilizer, pack at 1: 1;
9, water after heeling in permeablely, encircle in time film, sunshade (pine hair or straw etc.);
10, heel in after surviving and gradually reduce cover from sun, suitably control irrigation times, to transplanting, within first about 15 days, all remove cover from sun hardening (from sowing to transplanting approximately 110 days);
(2) Aztec marigold is grown seedlings and manages
1, the Aztec marigold sowing time (the general early March in Yunnan) was determined according to the Radix Angelicae Sinensis sowing time, and Radix Angelicae Sinensis is transplanted and within first 20 days, guaranteed that Aztec marigold can first transplant;
Are 2, Aztec marigold sowing, seedling management carried out http://www.zynw.com/lanmu2.php with reference to < < marigold with pigment culture technique > >? lmid=10 & wzid=6228.
(3) interplanting, nonoculture pattern and specification
1, Aztec marigold adopts duplicate rows ridging planting type, cultivation specification: plough the first furrow as a guideline for 1.8 meters, and 1.7 meters of moisture in the soil face widths, duplicate rows cultivation, 0.3 meter of spacing in the rows;
2, Aztec marigold is transplanted after 20 days and carries out Radix Angelicae Sinensis transplanting, Radix Angelicae Sinensis cultivation specification: Radix Angelicae Sinensis is transplanted between duplicate rows Aztec marigold, and 0.28 meter of spacing in the rows, 0.3 meter of line-spacing, the limit trade is returned and 0.35 meter, each interval of Aztec marigold, and mu is planted 4900-5000 strain (referring to Fig. 3);
3, the fertilising of Radix Angelicae Sinensis and Aztec marigold and daily management are carried out with reference to < < Radix Angelicae Sinensis high-yield high-efficiency cultivation technology > >, < < marigold with pigment culture technique > > respectively;
4, Radix Angelicae Sinensis, the conventional list of Aztec marigold are set respectively in contrast in implementation process, Radix Angelicae Sinensis specification: plough the first furrow as a guideline for 1.2 meters, 1.1 meters of moisture in the soil face widths, 0.15 meter of ditch depth, 0.28 meter of spacing in the rows, 0.3 meter of line-spacing, every row plants 4 strains, and mu is planted 7800-7900 strain (referring to Fig. 1); Aztec marigold specification: plough the first furrow as a guideline for 1.6 meters, the cultivation of single ridge, 0.3 meter of spacing in the rows (referring to Fig. 2).
(4) implementation result
Above Radix Angelicae Sinensis, Aztec marigold nonoculture and interplanting arrange three repetitions, totally 9 communities, completely random district group is arranged, fertilising and management are all continued to use traditional mode unified management and gather, growing period is not used any chemistry or biologic product of killing nematode or suppressing nematode, each community fresh marigold flower is gathered at every turn and is all claimed fresh weight, carries out Radix Angelicae Sinensis Investigation on Root-Knot Diseases, weigh and calculate control efficiency when being attributed to while gathering.
1, Aztec marigold yield data investigation and analysis
Every little the distinguishing of Aztec marigold nonoculture and intercropping and interplanting gathered and claims flower fresh weight, and each community gross yield is converted into per mu yield data.That is:
Aztec marigold nonoculture per mu yield=on average survey output * (666.7/ community area)
Aztec marigold nonoculture community area in proprietary material of the present invention is 38.4 square meters (24*1.6) (referring to accompanying drawings 4).
Aztec marigold intercropping and interplanting per mu yield=on average survey output * 666.7/ community area
Aztec marigold intercropping and interplanting community area in proprietary material of the present invention is 43.2 square meters (24*1.8) (referring to accompanying drawings 4).
2, Radix Angelicae Sinensis yield data investigation and analysis
Every little the distinguishing of Radix Angelicae Sinensis nonoculture and interplanting gathered and claims fresh weight, and the gross weight after gathering in each community is converted into per mu yield data.That is:
Radix Angelicae Sinensis nonoculture per mu yield=on average survey output * (666.7/ community area)
Radix Angelicae Sinensis nonoculture community area in proprietary material of the present invention is 28.8 square meters (24*1.2) (referring to accompanying drawings 4).
Radix Angelicae Sinensis intercropping and interplanting per mu yield=on average survey output * (666.7/ community area)
Radix Angelicae Sinensis intercropping and interplanting community area in proprietary material of the present invention is 43.2 square meters (24*1.8) (referring to accompanying drawings 4).
3, Investigation on Root-Knot Diseases and control efficiency analysis
To the interplanting of Radix Angelicae Sinensis/Aztec marigold and Radix Angelicae Sinensis nonoculture when Radix Angelicae Sinensis maturation is gathered by 5 samplings, every some investigation 10 strains, record root knot percentage, level value, and calculate root knot exponential sum control efficiency, above index is calculated by following standard and formula:
Grade scale:
0 grade: there is no root knot;
1 grade: slightly infect, only have a small amount of little root knot, root knot percentage is less than 3%;
2 grades: root knot is obvious, root knot percentage is less than 25%;
3 grades: root knot percentage is 26%-50%;
4 grades: root knot percentage is 51%-75%;
5 grades: root knot percentage is greater than 76%.
Root knot formula of index:
Effect formula is calculated in control:
Preventive effect=1-interplanting Radix Angelicae Sinensis root knot index/nonoculture Radix Angelicae Sinensis root knot index * 100
4, land utilization rate analysis
Farmland space-time variation intensive cultivation, is to improve land utilization efficiency, is fully used in limited arable land, is to alleviate the effective means not enough, that guarantee grain-production safety of ploughing.The index of evaluating land utilization rate height generally adopts Land Equivalent Ratio (Land equivalent ratio, LER), obtains and the summation of intercropping with Isoquant crop nonoculture requirement arable area.Land Equivalent Ratio, for interculture colony, be take output as index in contrast with single, evaluates the difference between intercropping and nonoculture crop groups land utilization efficiency.It is generally acknowledged, Land Equivalent Ratio is companion crop output and companion crop nonoculture output ratio sum, adopts following formula to calculate:
N representation crop number in formula, between Yi represents in unit are, mix up in the output of i crop, Yi ' represents with the output of i crop during nonoculture in homalographic.Output in the present invention is each per mu yield repeating.
5, implementation result analysis
Table 1 shows, adopts embodiment one, i.e. Radix Angelicae Sinensis and Aztec marigold interplanting, and Land Equivalent Ratio reaches 1.7, illustrates that these two kinds of crops carry out interplanting and show very outstanding mutual promoting action, shows the suitable collocation plantation of these two kinds of crops.And interplanting Radix Angelicae Sinensis is compared with nonoculture Radix Angelicae Sinensis, no matter on the incidence of disease (diseased plant rate), root knot rate or root knot index, all significantly reduce, average preventive effect reaches more than 75%, illustrates and utilizes Aztec marigold and Radix Angelicae Sinensis interplanting can significantly control root-knot nematode.
One effect analysis of table 1 embodiment
Six, embodiment two
Compare with embodiment one, embodiment two is only adjusted on transplanting time, is specially, and Radix Angelicae Sinensis, Aztec marigold adopt intercropping mode, and Radix Angelicae Sinensis, Aztec marigold are transplanted into land for growing field crops simultaneously.Radix Angelicae Sinensis, Aztec marigold are grown seedlings and manage, and evaluation index and cultivation specification (seeding row spacing, planting density) etc. are consistent with embodiment one.
(1) Radix Angelicae Sinensis is grown seedlings and is managed
Compare with embodiment one, Radix Angelicae Sinensis seedling raise period 20 days in advance, manages, applies fertilizer, waters etc. and be identical with embodiment one.
(2) Aztec marigold is grown seedlings and manages
With embodiment one.
(3) interplanting, nonoculture pattern and specification
With embodiment one.But Aztec marigold, Radix Angelicae Sinensis are transplanted into land for growing field crops simultaneously.
(4) implementation result
Radix Angelicae Sinensis, the investigation of Aztec marigold output, analysis and the investigation of Radix Angelicae Sinensis root-knot nematode, control efficiency, land utilization rate are calculated all identical with embodiment one.Concrete implementation result is in Table 2.
Embodiment two effect analyses show, adopt Aztec marigold and Radix Angelicae Sinensis to carry out intercropping and can effectively improve land utilization rate (soil equivalent), Land Equivalent Ratio reaches 1.5, illustrate that the intercropping of Radix Angelicae Sinensis-Aztec marigold can improve the compound output of unit are crop, but the effect of controlling root-knot nematode is limited, and preventive effect is only 46.7%.
Two effect analyses of table 2 embodiment
Claims (1)
1. utilize Aztec marigold and Radix Angelicae Sinensis interplanting to control a method for angelica root Root-knot, it is characterized in that:
(1) carry out Radix Angelicae Sinensis according to a conventional method respectively, Aztec marigold is grown seedlings and heels in;
(2) transplant Aztec marigold in the both lateral sides of 1.7 meters of wide ridge faces, then transplanting Aztec marigold, after 20 days, transplant again when being attributed to Aztec marigold ridge face in the ranks;
(3) daily management, the fertilising of transplanting rear Radix Angelicae Sinensis, Aztec marigold are carried out routinely;
Whole ground of described Aztec marigold ridging specification is: ploughs the first furrow as a guideline for 1.8 meters, and the cultivation of two ridges, 30 centimetres of spacing in the rows, 1.6 meters of line-spacings; Described transplanting when being attributed to Aztec marigold ridge face corresponding strain spacing parameter is in the ranks: 28 centimetres of Radix Angelicae Sinensis spacing in the rows, and 30 centimetres of line-spacings, the limit trade is returned and 35 centimetres, Aztec marigold interval.
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