Cultivation method capable of reinforcing stress resistance of corn and applicable to Jianghuai area

A cultivation method and a stress-resistant technology, applied in the field of agricultural cultivation, can solve problems such as crop yield reduction or failure, corn seedling waterlogging, large bell mouth stuck neck, etc., so as to improve the photosynthetic performance of the canopy, promote root pruning, soil The effect of increasing the moisture content

Active Publication Date: 2018-09-28
INST OF TOBACCO ANHUI ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For a long time, due to frequent floods in the Jianghuai area (waterlogging occurred for three consecutive years from 2005 to 2007), corn diseases have occurred seriously, and the precipitation is mainly concentrated in summer, and the precipitation from June to September accounts for about 50% to 80% of the annual precipitation. %, especially during the plum flood season, which is the critical period for timely harvesting, sowing and growth of main crops, which may easily cause waterlogging of corn seedlings, resulting in reduced or no crop production
At the same time, it is easy to produce stuck neck drought during the big trumpet mouth period.

Method used

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  • Cultivation method capable of reinforcing stress resistance of corn and applicable to Jianghuai area
  • Cultivation method capable of reinforcing stress resistance of corn and applicable to Jianghuai area
  • Cultivation method capable of reinforcing stress resistance of corn and applicable to Jianghuai area

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Example 1: Effects of Different Soil Tillage Modes on Maize Yield

[0016] Test method: (1) During the wheat season, crush the straw into small pieces below 10cm, perform subsoiling, and then rotary tillage until the soil is finely crushed; the depth of subsoiling is 30cm, which is suitable for breaking the bottom of the plow; (2) Use no-tillage for direct seeding Sowing corn, corn planting density 6000 plants / 667 m 2 , row spacing 60cm, sowing depth 4cm; corn season every 667m 2 Apply 16-20kg of pure nitrogen, including 10-14kg of basal fertilizer, 4-8kg of topdressing at the top of the bell mouth; all basal application of phosphorus and potassium fertilizers, 5-8kg of phosphorus pentoxide, 6-12kg of potassium oxide, sprinkled on the surface and then rotary tillage into the soil ; (3) Irrigate the corn during the trumpet-mouth period; (4) Use mechanical harvesting at an optional time.

[0017] Four treatments were set up in the experiment, split-plot design, farming ...

Embodiment 2

[0022] Example 2: Effects of Different Soil Tillage Modes on Soil Water Content

[0023] Before the irrigation treatment (1 day before irrigation), there was no significant difference between the SS+I and SS+NI treatments, and there was no significant difference between the TC+I and TC+NI treatments; Deep soil moisture content was higher than no-tillage treatment. The variance analysis was carried out on the water content of different soil depths, and the results showed that there was no significant difference in the SS+I, SS+NI, TC+I and TC+NI treatments of 0-10cm and 10-20cm soils; but the 20-30cm and 30-40cm depth soils The water content was significantly higher than that of TC+I and TC+NI treatments, and the soil water content increased by 9.3% and 9.0% ( figure 1 ). The results showed that after the soil was deeply loosened, the moisture moved downward and the water content of the deep soil increased.

Embodiment 3

[0024] Example 3: Effects of different soil cultivation methods on the photosynthetic performance of the population canopy

[0025] It can be seen from Table 2 that before irrigation (1 day before irrigation) at the big trumpet-mouth stage, the net photosynthetic rate of leaves in the panicle layer was improved by deep loosening of soil compared with no-tillage treatment (P n ), stomatal conductance (G s ) and intercellular CO 2 Concentration (c i )(Table 2). Subsoiling treatment compared with no-tillage treatment P n 4.8% increase, G s Increased by 21.8%, c i Improvement by 26.7%. P n , G s and c i The performance is SS+I>TC+I>SS+NI>TC+NI treatment; among them, SS+I treatment P n Significantly higher than other treatments, TC+I treatment had no significant difference with SS+NI treatment, but significantly higher than TC+NI treatment; SS+I treatment P n Compared with other treatments, it increased by 15.4%, 16.3% and 24.5% respectively. In the middle stage of grou...

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Abstract

The invention provides a cultivation method capable of reinforcing stress resistance of corn and applicable to Jianghuai area. The cultivation method comprises the following steps: (1) crushing wheatstraw into small segments with a length of 10 cm or below in a wheat season, deep loosening soil, turning the soil to bury the wheat straw segments, and carrying out rotary tilling and soil preparation until soil is finely crushed; (2) sowing corn in a tillage-free direct-sowing manner, and before sowing is performed, carrying out heavy application with a base fertilizer and NPK fertilizers by combination of basal application and topdressing, wherein phosphorus and potassium fertilizers are completely used for basal application, and a nitrogen fertilizer is topdressed in a flare opening stage;(3) carrying out irrigation in the flare opening stage of the corn; and (4) selecting a good time for harvesting with machinery. According to the invention, after shedding of corn pollen is finished,tebuconazole and agricultural streptomycin are adopted to prevent and treat diseases of leaf spot and stem rot of the corn. The method provided by the invention can improve the water content of deepsoil, can significantly improve the photosynthetic performance of canopy, and can increase the yield of the corn.

Description

technical field [0001] The invention belongs to the field of agricultural cultivation, and in particular relates to a cultivation method suitable for enhancing the stress resistance of corn in the Jianghuai region. Background technique [0002] Anhui is one of the national grain production bases, and the Jianghuai region is an important base for grain production in Anhui Province, which is closely related to the safety of national grain production. Therefore, it is of great significance to carry out research on deep loosening of soil for the research on stress-resistant cultivation of rainfed agriculture in the Jianghuai region. Soil is an important material carrier for crop production. The quality of the plow layer is directly related to the growth and yield of crops. The depth of the plow layer and the soil bulk density are important indicators reflecting the structure and function of the soil plow layer. The plow layer is suitable for the growth of corn roots. The depth ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G22/20A01G13/00
CPCA01G13/00A01G22/20
Inventor 武文明王世济陈洪俭张林彭晨竟丽丽
Owner INST OF TOBACCO ANHUI ACADEMY OF AGRI SCI
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