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The quality of soil moisture not only determines the growth of crops, but also has a great influence on the local ecological environment. In addition to the influence of the external environment, we must do a good job of protecting the alum, and provide suitable sensation for the emergence of crops.
1. Immediately after ploughing
Earthworms are extremely important. If the soil is sticky, if the pad is left after the autumn ploughing, after two times of spring plowing, Dagu will still account for 25.6% of the total soil layer. The people in the Xuchang area said: The spiders and bastards must not fight crickets. The light plough does not smash, and the hoe plucks. "If the soil moisture is suitable, plow along with the plow, or plow in the morning, linger before noon, plough in the afternoon, and hoe before harvesting. If you stick to the soil, and plough till late in the machine, then you will run away and run out of water. When the moisture content is 12.78%, two days after ploughing, the mash will not be crushed; when the soil moisture content of the loan is 19.64%, the plough will be loosened after the ploughing, and the soil will be loose after the rake is dumped; when the soil moisture content is 20.23 At the time of %, the water level of the arable land is high, and most of the soil is loose afterwards.
Therefore, smashing the earth is the key to storing crops after cultivating crops, especially when wheat is sown in late autumn. A difference of one day, square. The water loss of the soil is 30 to 50%. After the deep plowing, the water can be cut off and the water can be cut off. In the dry season, wheat fields can be smashed, and loose soil can be disintegrated to prevent the evaporation of surface water due to cracks in the compaction and play a role in drought resistance. According to surveys in Zhengjiao, in mid-February, in the field of spring wheat fields, the moisture loss was only 1.2% after half a month in the 10-20 cm soil layer, whereas the loss of moisture in the uneaten wheat fields was 4.3%. The cotton fields in Xinsheng Drainage Irrigation District in Xinxiang One month after the early spring, the soil moisture content of 0 to 10 cm was 3.6% higher than the absolute value of the innocent.
2, timely cultivator, drought protection
Timely cultivator has a good effect on soil loosening, temperature adjustment, alum protection, early resistance and weed control. Especially for other lJ autumn crops many times cultivator, more important. As Chairman Mao pointed out: The role of Valeriana is not only to help the seedlings, but also to store water and resist drought. It is more important for saline soils to be sown in time to loosen the soil. Especially after the rain, the cultivator can cut off the capillary evaporation of soil water and prevent back-salt. Autumn crops, especially cotton seedlings, multi-tillage, deep-coin farming, can loosen the soil, preserve the soil moisture, promote the development of roots and more when the beginning of seedlings, it will be repeated once every ten days and the cotton seedlings will grow vigorously. When the cotton farmers in Donghuangpan District went into ridge cultivation in late April, they were cultivating immediately, and they were called "during the evening dill", which could increase the temperature at that time by 2°C and increase soil moisture by 3.5%.
3, pouring water, sowing, ditching
In areas where there is a lack of sediments, soils are heavy, there are few people and there are few people in the area and spring droughts are dry, measures can be taken to plant seedlings and plant seedlings for cultivation. For example, in Nanyang's black-slug soil area, the "dip-up site" adopts small piers for cultivation, ditching and sowing, and water permeability to seep. It can provide drought-proof and water-saving in the spring, and it can also fight waterlogging in the fall to prevent "pre-dip". In the clay area, after the rain, the site preparation was slightly delayed, and it was easy to get rid of waste. In addition, grasping the laws of soil moisture, selecting drought-tolerant crops in drought-prone areas, and resolving the contradiction between less soil water and crop water requirements is also an effective measure to combat drought and ensure high yields.
Related Soil Instruments: Soil moisture monitoring systems Soil moisture meters
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