Cotton and mung bean intercropping is a successful and efficient cultivation mode in our province. Although this mode of cultivation is slightly lower than that of cotton melon and cotton green onions, it is more time-saving and easier to accept than other intercropping methods. Our province, Anhui, Xingtai, Quzhou, Hengshui and other places have adopted. First, the planting patterns of cotton are planted in large and small rows, with a large row spacing of 70-90 centimeters, a small row spacing of 40-50 centimeters, and a row of small mung beans. The density of cotton is 4000 per acre. Mung bean spacing 10 to 15 cm, leaving 5000 to 7000 per mu. Second, the yield benefits for small green beans between cotton, generally does not affect the cotton yield, mung bean yield of 30 to 40 kilograms per mu, mu gain 120 to 160 yuan. Third, cultivation techniques 1. Selection. Due to the low salt tolerance during the growth of mung bean, planting in saline-alkali land easily leads to dead or no seedlings. Therefore, intercropping between cotton and mung bean is suitable for saline-alkali land with better water and fertilizer conditions. 2. Select the appropriate mung bean varieties. Selection of relatively compact plant type, early maturity, high yield and good varieties, such as the Zhonglu No.1, white flower mung bean and so on. 3 Apply base fertilizer, increase phosphate fertilizer, and pour good bottom water. To apply base fertilizer in combination with winter and spring soil preparation, mungbean needs more phosphorus, and increasing phosphate fertilizer has obvious effect on increasing yield of cotton and beans. 15 days before sowing, the bottom of the water should be poured to ensure that the whole seedling is broadcast. 4. Suitable sowing. Mungbean can be planted several days in advance or in the same period with cotton. The sowing date will be too late and will extend the symbiotic period of cotton and beans. The general sowing date can be arranged in the middle or late April. 5. Watering timely. Around June 20th, when the mung bean blossoms and sprouts, the cotton enters the stage of budding, and the lack of water at this time will directly affect the production of cotton beans. This period is just the dry season before the arrival of rain. It is necessary to water the drought. . 6. Timely harvest. The determination of the mung bean harvest period should be based on the principle of “unequal hours, ranging from time to timeâ€. When 70% of the horns turn black, one harvest is completed. If the mung bean matures later, when the cotton enters the flowering stage, it should also be unpicked once to avoid affecting the growth of the cotton. If any of the varieties matured too long, in order to prevent premature burst horns, mature soybean meal can be harvested in batches. 7. Cotton field management after harvesting beans. First, after the soybean meal is unplugged, it can be combined with the soil to turn over the place. Before the cotton soil is cultivated, about 10 kilograms of urea is recovered. The second is to re-apply flowers and bells fertilizer, fertilizer and water combined, the general application of urea 10 to 15 kg, plus application of compound fertilizer or organic fertilizer, ditch deep facilities. The third is the principle of timely top-down, sticking to unequal hours and not to wait for sticks, generally kicking off the top on July 15. The fourth is to do a good job of chemical control, generally after the top of the fruit buds after the top of the first fruit bud 2 ~ 3, heavy control, per acre with shrinkage Anyuan powder 3 ~ 3.5 grams of water spray 40 kg; if the fertilizer water to meet, Increase the control twice; under normal circumstances advocate light control, increase the number of times, the concentration should be light. The fifth is pest control. When one hundred strains of H. armigera have 10 larvae, they must be controlled in time.
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