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随着农业水利化的逐步实现,对灌溉技术的要求也随之提高。水是庄稼的命脉,也是农业八字宪法中重要的一条。在不同的气候,土壤,作物条件下,如何进行合理的灌溉,是一个较复杂的问题。也是一个当前亟待解决的问题。根据植物水分生理的指标进行灌溉是一个优良的办法,但是由于技术条件要求较严格,目前在大面积上推广,存在着困难,但不可否认是我们努力的目标。目前情况,根据土壤田间持水量,结合作物生长发育时期不同的需水规律进行灌溉,基本上能指示出天气,土壤含水,作物需水不同的情况下,需要灌溉的时间和灌水量。这样就有利于增加产量,节约用水。根据云南宾川地区对棉田灌溉实践的结果,找到了一个土壤田间持水量的简捷经验。用这个方法去测定不同类型的土壤,可以节约许多人力物力和易于掌握,同时具有很大的可靠性,现将结果叙述于下;
With the gradual realization of agricultural water conservancy, the requirements for irrigation technology also increase. Water is the lifeblood of crops and is also an important part of the agricultural character constitution. Under different climate, soil and crop conditions, how to carry out reasonable irrigation is a more complicated issue. It is also an urgent problem to be solved. Irrigation is a good way to plant hydrophytic indicators, but due to the stricter technical conditions and the current widespread promotion, there are difficulties, but it is undeniable that our goal is to work hard. Current situation, according to the soil field water capacity, combined with different water requirements during crop growth and development for irrigation, basically can indicate the weather, soil moisture, crop water needs different circumstances, the need for irrigation time and irrigation. This will help increase production and save water. According to the result of irrigation practice in cotton fields in Binchuan, Yunnan Province, a simple and convenient experience of field water holding capacity was found. Using this method to determine different types of soils can save a lot of manpower and resources and is easy to grasp. At the same time, it has great reliability, and the results are described below.