Scientific Irrigation Technology of Cotton
Cotton is a straight root crop, the main root is deeply embedded in the soil, and it is a drought-tolerant crop. The period from budding to boll opening is the key period of water demand.
1. Conventional irrigation: the whole growth period is irrigated 3-4 times, the first irrigation is in the budding stage, that is, in mid-late June, the second irrigation is in the full bloom stage, that is, the middle of July, the third irrigation is in the flower and boll stage, that is, from the end of July to the beginning of August, if the weather is dry or sand leakage can be done again. If there is a lot of rainfall, no drought can no longer be watered, the irrigation quota, in addition to 120 square meters of irrigation per mu, irrigation 60 square meters per mu during the growth period. The irrigation quota is 360 square meters per mu. Using small border irrigation, the suitable area of small border is 0.2-0.3 mu.
2. Drip irrigation under plastic film: the area of drip irrigation under plastic film in our county is large, so we should irrigate scientifically according to the following irrigation scheme to ensure the water-saving effect of drip irrigation.
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Monsanto will launch drought-tolerant transgenic cotton varieties
Monsanto, the world's leading-edge seed company, is developing a drought-tolerant genetically modified cotton variety that could be launched in 2015 and used for commercial cultivation. "We hope to launch a drought-tolerant cotton seed by the middle of the next decade," said JerrySteiner, vice president of Monsanto. But five years later, we can announce whether we can launch drought-tolerant seeds at that time. " Monsanto officials also said the company is currently working on genetically modified seeds that can minimize fertilizer use. Transgenic species
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Matters needing attention in irrigation technology of cotton field
Cotton should be irrigated for 3 times during the whole growth period, and irrigation should adhere to the principle that the first water is late, the second water is late, and the three water is full. Head water is carried out at noon when the symptoms of water shortage in cotton leaves are obvious, and it is best to wait until 10% of the plants in the cotton field see peaches. Generally speaking, the best water intake period is from late June to early July. The watering of Wangchang field was postponed to 2 hours of boll setting per plant. Strengthen water control to prevent prosperous growth, the amount of water in the irrigation head should be small, and the amount of irrigation water should be 50 muri 60 cubic meters per mu. One water, two water interval 8 murmurs 10 days, two
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