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试验表明,免耕法和稻草还田免耕水稻苗前期生长稍慢,中期生长较快,分蘖高峰期过后回落较慢,后期生长较平稳,具有“前缓、中快、后稳”的生长特点。每公顷稻草还田免耕比常耕抛秧增产483 kg,免耕抛秧比常耕抛秧增产54 kg。增产效应为:稻草还田免耕>免耕抛秧>常耕抛秧。每公顷免耕抛秧比常耕抛秧节本增收966元,稻草还田免耕比常耕抛秧节本增收1 275元。
The results showed that no-tillage and no-tillage rice straw had a slower growth in the early stage, a faster growth in the middle stage, a slower decline after the peak tillering stage and a more stable growth in the late stage, with the growth of “pre-slow, mid-fast and steady” Features. The yield per hectare straw without tillage increased 483 kg compared with that of the conventional tillage, and the no-tillage throwing increased the yield by 54 kg compared with the conventional tillage. Yield-increasing effect: straw returning to zero-tillage> no-till throwing> constant-till throwing. The cost per hectare of no-till throwing seedlings was 966 yuan more than that of the normal day throwing seedlings, while the no-till rice straw yield increased by RMB 1,275 over that of the normal day.