How to strengthen the tillering rate of Rice at Seedling stage

Early application of tillering fertilizer and appropriate tillering fertilizer

Nitrogen nutrition plays a leading role in rice tillering, and the amount of fertilizer applied in the tillering stage is 25% of that in the whole growth period, so early application of available nitrogen to promote tillering, so that the leaf color turns black quickly is the main measure to promote tillering in the early stage. The tillering stage of early-maturing varieties is short, and tiller-promoting fertilizer must be fully applied within 10 days after transplanting. For middle and late maturing varieties, tiller promoting fertilizer is generally applied about 15 days after transplanting. At the end of effective tillering stage, if the number of effective stems is obviously less than the expected suitable panicle number, appropriate tiller protection fertilizer should be applied to promote the steady growth of tillers.

Live trees in an inch of water, slow seedlings in shallow water

When transplanting rice seedlings, in order to facilitate shallow planting, transplanting seedlings with thin water is generally carried out. After transplanting rice seedlings, the water layer will be properly deepened, the foliar evaporation will be reduced, and the plant injury will be reduced, so as to facilitate the survival of turning green. But it should not be too deep, so as not to drown the lower leaves, reduce the water temperature and affect the hairy roots. Generally speaking, it is appropriate to have 1.5 inches of water, the so-called "living trees in an inch of water". After the seedlings turn green, the water layer should be lowered to 0.5PY 1.0 inch immediately to facilitate tillering and rooting. Because the occurrence of tiller is closely related to the growth of root system and temperature. On the one hand, shallow irrigation is required at the tillering stage, but the water must not be cut off and suffer from drought.

Weed carefully and sun up the field at the right time

After the seedlings are slow down, herbicides can be applied to control weeds. Control of barnyardgrass and broad-leaved weeds: use butachlor + Nongdele or Caokexin 150ml 200g per hectare; control older barnyardgrass and trigonium grass above three leaves; use 50% paspalum 500 grams + bentazon 2 kg per hectare and spray 300 kg of water. This can achieve the effect of killing weeds. The rice field should be dried at the end of tillering stage. The timing of drying the field is very important, first, it depends on the tillering situation, and the implementation of "seedlings can dry the field"; second, it depends on the growth of wheat seedlings, such as fierce growth, thick leaves, early sun and heavy sun, such as slow growth, light sun exposure, light sun exposure, and light sun exposure; third, it depends on the soil condition, the fields with rotten soil and deep mud feet should be exposed early and heavily, low-lying fields and cold-soaked fields should not flourish, and the seedlings should be drained early and slightly exposed. After drying the saline-alkali land, it is easy to cause panalkali, the newly opened rice fields with poor water conservation will aggravate the leakage, and the method of "deep water flooding tillering" can be used to restrain the late tillering in some cold areas. Depth of about 10 cm is appropriate, the time should not be long, generally not more than 10 days, so as to avoid excessive elongation of the basal internodes, easy to cause lodging.