CN103125245A

CN103125245A - Method for seed selecting and remaining of double-cropping water bamboos in summer

Info

Publication number: CN103125245A
Application number: CN2013100764398A
Authority: CN
Inventors: 江解增
Original assignee: Yangzhou University
Current assignee: Yangzhou University
Priority date: 2013-03-11
Filing date: 2013-03-11
Publication date: 2013-06-05

Abstract

The invention relates to a method for seed selecting and remaining of double-cropping water bamboos in summer. According to the method, at the terminal stage of or after harvest of the water bamboos growing in summer, robust stem tillers in a normal harvest area are selected, piled up under dark conditions after slightly processed, and watered to maintain humidity. Five days later, when the water bamboos can be transplanted into water bamboo fields for autumn, stem tillers without sprouting young leaves are rejected, and stem tillers with young leaves longer than 5cm are transplanted into the large fields. Not only is the output of the water bamboos growing in summer not affected, but also temporary planting in other fields is unnecessary. The selected and remained stem tillers are large in specifications and nutrient amount, and beneficial to sprouting and rapid growth of new-sprouting branch tillers and ensures relatively large output of water bamboos in autumn. Residual stem tillers in water bamboo fields for summer are fully utilized for promoting the use efficiency.

Description

A kind of pair season wild rice stem kind of the method for selecting and remain in summer

Technical field

The present invention relates to a kind of pair season wild rice stem kind of the method for selecting and remain in summer.Belong to agricultural (vegetables) culture technique field.

Background technology

Liu Yi completely waits (2010) according to data in the past, and kind of the technology of selecting and remain the summer of having summarized two season Zizania latifolia Cultivars: (1) Hubei Wuhan Area way: the seed selection time is the 5-6 the middle ten days and the last ten days month.Selection criterion be summer hay knot hay early, many, neat, the low and typical plant of varietal characteristic in knot hay position, the object of selecting and remain is tillering of generation spring and summer but unpregnancy hay.To be selected in tillers singlely uproots down from base portion, heels in line-spacing 20cm, spacing in the rows 15cm in special posting in the rice seedling bed.Before heeling in, first will be selected in tillered nursery plant blade top and prescind, base portion stays 25～35cm.(2) Law Firm Suzhou Jiangsu area way: 1. summer Jiao Dun choosing: the summer hay carries out the pier choosing picking time, and middle menu strain is not generally gathered (early maturer gather half), short its tiller bud growth.After having gathered in summer hay land for growing field crops, excavate middle seed selection pier, post seedling in the limit, field, keep root moistening.Before and after the beginning of autumn, break off with the fingers and thumb and get tillered nursery plant, be colonizated in seed field.2. swim hay seed selection method: when hay is gathered, the seedling of selecting and remain from the good trip hay of knot hay the Characters, the length of tillering, the thickness of requirement trip hay both sides are consistent simultaneously.Middle choosing trip hay is connected the root turn up, extract the stem wild rice stem, plant in seed field.3. seedling hay seed selection method: utilize the method kind of selecting and remain in the seedling lazy weight.The 1st year, select excellent fine individual plant, wherein early-maturing variety is selected and remain according to trip hay seed selection method, and middle-late ripening variety is selected and remain according to summer hay kind pier seed selection method; The 2nd year, expanding propagation, and in roguing in May, grey hay and male hay are removed in the final election 1 time of gathering of autumn in October hay simultaneously; The 3rd year, in the Jiao Dun that selects and remain last year of division propagation again in spring, enter formal field planting field production after autumn.(3) some areas, Zhejiang Province facility cultivation is with the method for selecting and remain of seedling: at summer hay the middle and late growth stage, choosing is pregnant hay, and fair and clear full, the knot hay is neat, knot hay position the is lower plant of hay shell is as kind of a strain.Kind excavates kind of a strain surrounding earth after selecting good strains in the field for seed and deciding, and promotes the plant base portion to sprout and tillers.(time is the 6-7 month) can uproot down when growing 30～40cm tillering of new pumping, transplants the land for growing field crops.Also can when new life be tillered long 2-3cm, transplant and heel in 1 time, to mid or late July plant division field planting land for growing field crops.[Liu Yiman, Ke Weidong, Li Minghua, Zhong Lan, bright red lotus, Li Shuanmei, Huang Laichun. the wild rice stem technology .2010 that reserves seed for planting, seed, V29 (5): 112～113]

In kind of the method for selecting and remain the summer of above-mentioned all pairs season wild rice stem, or less tillered nursery plant or the other field transplanting of needs of the specification of selecting and remain heeled in.The employing less tillered nursery plant method of specification of selecting and remain, less because of its nutrient accumulation, autumn hay output is lower, even for obtaining summer in the next year hay high yield autumn hay of not gathering then; Employing new life is tillered to transplant and is heeled in method, need separately ward off the field plantation, has reduced the availability in soil, and under the intense situation of current arable land, a lot of places are difficult to carry out.And the summer hay gather finish after, the mostly remaining not yet pregnant hay in a large number in field is although also have the pregnant hay of part not yet to reach the stem tiller of harvesting standard; Because of summer hay colony closing, generally do not give over to and produce autumn, directly plough rear preparation plantation second stubble crop, cause a large amount of stem tiller wastes.

Summary of the invention

In order to overcome defects, the invention provides a kind of pair season wild rice stem kind of the method for selecting and remain in summer, the summer hay gather latter stage or finish after, the sturdy stem tiller in the zone of selecting normally to gather is namely transplanted the land for growing field crops after processing a little, can obtain then high yield autumn.

A kind of pair season wild rice stem kind of the method for selecting and remain in summer, comprise the following steps:

(1) the summer hay gather latter stage or finish after, the front stubble in autumn hay field allowed and carried out after stubble;

(2) in the zone of normally gathering, the stem tiller that leaf sheath (false stem) height 40cm, diameter 3cm is above extracts with root, and the preferential stem tiller of selecting pregnant hay is wiped out the above blade of pulvinus, surplus leaf sheath only;

(3) be deposited in lucifuge shady and cool place after tying up, top and surrounding cover double-layered sunshade net or straw, and often sprinkling cold water keeps humidity;

After (4) 5 days, when autumn hay field can be transplanted, reject the stem evil that there is no the young leaves pumping, the stem tiller that the young leaves pumping reaches more than 5cm is transplanted the land for growing field crops.

Advantage of the present invention is: (1) neither affects the output of summer hay, and also separately the field is heeled in; (2) the larger nutrient of stem tiller specification of selecting and remain is more, the pregnant hay of part stem tiller, and the accumulation nutrient is more, is convenient to new life tiller pumping and Fast Growth, has guaranteed the higher output of autumn hay; More than young leaves pumping 5cm was arranged in (3) 5 days, show that its vigor is strong, substantially can survive after transplanting; (4) take full advantage of the residual stem tiller in summer hay field, raising utilization ratio.

Embodiment

(1) implement at Dongtai City, Jiangsu Province institute of agricultural sciences Experimental Base.Booth melon-fruit-like vegetable in spring (greenhouse watermelon in early spring is selected in this test) began clear field July 5 after gathering by the end of June and finishing, and applied fertilizer, ploughed, smooth.

(2) select season in middle late pair of suitable autumn Zizania latifolia Cultivars (this test selects " No. 2, imperial hay " to belong to autumn late variety type, " Wujiang Tongli Zhen clear lake vegetables cooperative society " bought from the Suzhou City), in 5-8 day in July, this kind summer hay has finished to gather, successively from the residual summer hay Tanaka zone high 50cm of leaf sheath that chooses that normally gathers, the above sturdy stem tiller of the thick 3cm in middle part, the preferential stem tiller of selecting pregnant hay to expand, strand is except the above blade of pulvinus, only stay the leaf sheath part, every 30-50 strain is a bundle with the rope colligation, be deposited in behind the house on the place without direct sunlight, all cover with the double-layered sunshade net.Running water of early, middle and late each sprinkling is until the bottom has more water to drop down.

(3) land for growing field crops was poured water, was weeded and weed and loosen the soil July 15, the wild rice stem seedling of selecting and remain was transported to plant the limit, field simultaneously, bundled wild rice stem seedling was posted temporarily be planted in edge, land for growing field crops or ditch, in order to avoid the root dehydration.

(4) bundled wild rice stem seedling is scattered, reject the stem tiller that there is no the pumping young leaves, the stem tiller more than young leaves pumping 5cm is transplanted the land for growing field crops.

The wild rice stem of (5) transplanting finally all survives.To late October plastic house plastic film, every strain has more than 5 new life tiller, and be up to 11 and tiller, and general 2-3 of conventional little transplantation of seedlings tillers.

(6) October 15 began to gather, average every strain gather 3.2 of wild rice stems, the heavy 125g of average single hay, and conventional little transplantation of seedlings generally only has stem tiller when transplanting 1 wild rice stem of can gathering.

Claims

One kind two season wild rice stem kind of the method for selecting and remain in summer, comprise the following steps:

(1) the summer hay gather latter stage or finish after, the front stubble in autumn hay field allowed and carried out after stubble;

(2) in the zone of normally gathering, leaf sheath height 40cm, stem tiller more than diameter 3cm are extracted with root, the preferential stem tiller of selecting pregnant hay is wiped out the above blade of pulvinus, surplus leaf sheath only;

(3) be deposited in lucifuge shady and cool place after tying up, top and surrounding cover double-layered sunshade net or straw, and often sprinkling cold water keeps humidity;

After (4) 5 days, when autumn hay field can be transplanted, reject the stem evil that there is no the young leaves pumping, the stem tiller that the young leaves pumping reaches more than 5cm is transplanted the land for growing field crops.