Cotton interplanting small mung beans

Cotton and mung bean intercropping is a successful and efficient planting mode summarized by Hebei Province. Although this kind of cultivation mode is slightly lower than cotton melon and cotton onion, it is easier to be accepted than other intercropping models. Hebei Province, Xingtai, Zhangzhou, Hengshui and other places have been adopted.

First, planting style

The cotton is planted in large and small rows with a large row spacing of 70-90 cm and a small row spacing of 40-50 cm. The large row is made into a small mung bean. The cotton density is 4000 plants per mu. The distance between mung bean plants is 10 to 15 cm, and 5,000 to 7,000 plants per mu are reserved.

Second, the output efficiency

Cotton intercropping with small mung beans generally does not affect cotton production. The average yield of mung bean is 30-40 kg, and the yield per mu is 120-160 yuan.

Third, cultivation techniques

1. Select the land. Because the salt tolerance of mung bean is very low during growth, it is easy to cause dead seedlings or no seedlings in saline-alkali soil. Therefore, cotton and mung bean intercropping are suitable for salt-free alkaline plots with better water and fertilizer conditions.

2. Choose the appropriate mung bean variety. Choose varieties with compact, early maturity and high yield, such as Zhonglv No.1 and Baihua Mung Bean.

3. Apply enough base fertilizer, add phosphate fertilizer, and pour the bottom water. It is necessary to combine the winter and spring to apply the base fertilizer, because the green bean needs more phosphorus, and the application of phosphate fertilizer has obvious effect on increasing the yield of cotton and beans. 15 days before sowing, you should pour the bottom of the water to ensure that the whole seedling is broadcast.

4. Sowing at the right time. Mung beans can be planted a few days in advance or in the same period as cotton, and the sowing date is too late, which will prolong the symbiotic period of cotton beans. The general sowing period can be arranged in the middle and late April.

5. Watering at the right time. On June 20th, the mung bean blossoms and pods, and the cotton enters the stage of Shenglei. At this time, the lack of water will directly affect the yield of cotton beans. This period is just the dry season before the rain arrives. 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 “the pods are not equal, the time is not equal to the pods”. When the 70% pod angle turns black, the harvest is completed. If the mung bean matures late, when the cotton enters the flowering stage, it should be removed once, so as not to affect the cotton growth. If some varieties are too long at maturity, in order to prevent premature pods from bursting, mature pods can be harvested in batches.

7. Management of cotton fields after receiving beans. First, after the soybean meal is pulled out, it can be combined with the soil to be pressed on the spot. Before the cotton is cultivated, the urea is about 10 kg. The second is to re-apply flower bell fertilizer, fertilizer and water combination, generally apply 10 to 15 kg of urea per mu, add compound fertilizer or organic fertilizer, and ditch deep application. The third is to timely top the top, stick to the principle that the branches are not equal and the time is not equal, usually on July 15th. The fourth is to do a good job in chemical regulation. Generally, when the first fruit branch of the upper part is budded 2 to 3, the control is repeated. Each acre is sprayed with 3 to 3.5 grams of water to 40 kg of water. If the fertilizer meets, Increase chemical control twice; generally advocate light control, increase the number of times, the concentration should be light. The fifth is to control pests. When there are 100 larvae of cotton bollworm in 100 plants, it is necessary to prevent and control them in time.