Method for remedying crop cultivation after flood disasters happen to double cropping rice fields in south China
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A technology of flood disaster and cultivation method, applied in the field of remedial crop cultivation after flood disaster in southern double-cropping paddy fields, can solve the problems of inability to normally carry out late rice production, destruction of late rice seedlings, failure of early rice harvest, etc., to ensure normal growth and development, and to suppress weeds. The effect of short growth and growth period
Inactive Publication Date: 2014-04-30
HUNAN SOIL & FERTILIZER INST
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At this stage, the early rice is in the stage of booting to milk maturity, and the late rice is in the seedling stage; once it encounters floods, the mild flooding will have a great impact on the growth and productio...
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Embodiment 1
[0049] Post-disaster remedial cultivation of autumn corn:
[0050] Autumn corn is sown from mid-late July to early August, and the previous crop is mainly early rice. Autumn corn is cultivated by direct seeding. In terms of cultivation management, according to the occurrence and characteristics of flood disasters in southern paddy fields and local climate conditions, attention should be paid to the selection of mid- and early-maturing disease-resistant varieties, and the use of border farming to facilitate drainage and irrigation; increase base fertilizer, early topdressing, and heavy application of jointing fertilizer; Timely cultivating and weeding to promote root growth; timely irrigation before and after heading to prevent drought. The operations in the links of soil preparation, sowing, management and harvesting are as follows:
[0051] a) Precisely prepare the soil, ditch and ridge, and apply enough base fertilizer. Before soil preparation, apply potassium sulfate com...
Embodiment 2
[0056] Post-disaster remedial cultivation of autumn vegetables:
[0057] ① Choice of vegetable varieties. Choose Xiayangbai, Huayangbai, etc. as autumn vegetables, sow seedlings on July 20, apply base fertilizer to the seedbed before sowing, apply 45% compound fertilizer 30kg / mu, or urea 10kg / mu, superphosphate 35kg / mu and chlorine Potassium 7.5kg / mu is used as the base fertilizer of the seedbed.
[0058] ②Soil preparation, ditching and ridging, base fertilizer application. Apply enough basal fertilizer before site preparation, and the amount of basal fertilizer is potassium sulfate compound fertilizer (N:P 2 o 5 :K 2 O=15:15:15) 50kg / mu, plow and rake the ground after applying the base fertilizer to mix the base fertilizer and soil evenly, then open a ridge with a width of 2.0 meters and a furrow depth of 10-15cm; it will be carried out on August 15-20 Transplanting, 5 rows per compartment during transplanting, row spacing 35cm, plant spacing 30cm, density 4500 plants / mu...
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Abstract
The invention discloses a method for remedying crop cultivation after flood disasters happen to double cropping rice fields in south China. After flood disasters happen to double cropping rice fields in south China, crops including autumn maize or autumn vegetables are selected to be planted in the rice fields where the previous crops are early season rice, and the rice field-upland field rotation is conducted on the early season rice and the autumn crops by changing the double cropping rice annual planting mode. The method for remedying crop cultivation after flood disasters includes the first step of conducting after-calamity remedy cultivation on autumn maize, and the second step of conducting after-calamity remedy cultivation on autumn vegetables. In the step of conducting after-calamity remedy cultivation on autumn maize, new maize varieties are introduced, seed direct seeding is adopted, field management is well conducted, and harvesting is timely conducted. In the step of conducting after-calamity remedy cultivation on autumn vegetables, appropriate vegetable varieties are selected, seedling transplantation is conducted, field management is enhanced, and harvesting is timely conducted. According to the method for remedying crop cultivation after flood disasters, great economical losses caused when no early season rice is harvested and late rice seedlings are destroyed after flood disasters happen to double cropping rice fields in south China and late rice production can not be normally conducted can be reduced, and the method is simple and easy to achieve, beneficial for lowering the occurrence degree of plant diseases and insect pests after the disasters, and capable of ensuring economic incomes.
Description
technical field [0001] The invention belongs to the technical field of post-flood remedial cultivation, and more specifically relates to a set of cultivation methods for post-flood remedial crops in southern double-cropping paddy fields. Crop layout and crop remedial cultivation techniques promotion after rice field flood disaster. Background technique [0002] Rice is a food crop widely distributed in southern my country. The double-cropping rice area represented by Hunan is the main production area of double-cropping rice in my country. The annual average temperature in this area is 16-18°C, and the accumulated temperature ≥10°C is 5000-5800°C , the annual rainfall is 1200-1700mm, the annual average sunshine hours are 1300-1800h, and the annual total solar radiation is 3330-4040MJ / m 2 , The frost-free period is 270-310 days, which can meet the various needs of rice growth and development, and is suitable for the development of double-cropping rice production. According ...
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